Well, based on my hazy memories of events I think we've already passed in the manga but were given more detail in the WN, I believe that the leader IS basically acting out a grudge on this subject bc he's envious of how well liked & respected the MC was within his guild (w/ a dash of paranoia that the MC would somehow usurp his position as leader), so he's not exactly behaving logically. That being said, I think based off of a lot of the comments here the manga hasn't really illustrated well the guild leader's core beliefs on this subject, which actually ties both of these situations together. To the leader, the "results" he's concerned about question are almost exclusively combat-related (personal combat strength, direct contribution to successful labyrinth raids, etc.), & anything outside of that bubble is basically worthless. As such, he feels like Laurent is dead weight bc his core abilities revolve around the support & development of other members, & OFC he wants his up-and-coming combat specialist (who, for bonus points, is an attractive female) to be the one handing over the goods so she & the combat group get attention/praise. He's not quite so much hypocritical (though make no mistake, he IS that as well) as he is narrow-minded.Both the writing and art feel so sloppy. The old guild leader is a good example.
"Results are what matter!"
Ok, Laurent produced lots of successful results
"No! He has no talent!"
gtfo with that bs